JPH0826731B2 - Door airtight holding device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door airtightness retaining device for airtightly retaining the inside and the outside of a door when the opening of a building is closed by the door.

[0002]

2. Description of the Related Art As a conventional technique of this kind, there is an actual exploitation method 58.
There is a door sealing device disclosed in Japanese Patent No. 868893.
In this device, as shown in FIG. 10, a leaf spring 36 is arranged so as to curve toward the outside of the door 7 along the longitudinal direction of the lower edge of the door 7 provided with the opening 2, and the contact rod 32 is arranged. Connects the end of the leaf spring 36 on the side protruding from the side edge of the door to the corresponding contact rod 32, and fixes the end of the leaf spring 36 on the opposite side to the inside of the door 7 so that the lower packing 34 is By attaching to the substantially central portion of the leaf spring 36, the following packing 34 projects from the lower edge of the door 7 when the protruding end of the contact rod 32 from the door side edge is pressed into the door 7. It is configured to seal the gap between the lower edge and the floor surface 37.
The door 7 is hung from the door hanger 14 and the door hanger 14 that move on the rail 5 provided above the opening 2, so that the door 7 can move while being hung in the direction of the rail 5. .

[0003]

However, according to the above-mentioned conventional technique, the lower packing 34 provided along the longitudinal direction of the lower edge of the door 7 is moved from the lower edge of the door 7 to the floor surface 37 by the leaf spring 36. Although the lower packing 34 and the floor surface 37 are completely sealed because they are pushed vertically against each other, as shown in FIG. 11, the lower ends of the side packings 38 on both sides of the door 7 and the lower packing 34 are sealed. Gap L between
As a result, air flows in and out between the inside and the outside of the door 7 through this gap L as shown in FIG. .

[0004]

The present invention has been made in view of the above circumstances, and the means therefor are as follows.
An upper packing and a side packing which are provided on the upper side and both sides of the one surface of the door and which come into close contact with the peripheral walls on the upper side and both sides of the opening when the door approaches the opening side in the direction perpendicular to the opening / closing direction, and the lower side of the door. A lower packing that is provided over the entire width in the width direction and that sticks to the floor surface by protruding from the lower side of the door when the door approaches the opening side, below the side packing. The end part is formed on an inclined surface that inclines downward toward the opening side, and the lower packing is provided so as to project along the inclined surface.

[0005]

According to the above means, since the lower packing projects from the lower side of the door along the inclined surface of the lower end of the side packing, the upper packing, the two side packings and the lower packing are mutually connected. Since they will come into close contact with the peripheral wall and floor surface of the opening in a close contact state, it is possible to completely partition the opening without creating a gap between each packing or between each packing and the peripheral wall and floor surface. it can.

[0006]

Embodiments of the present invention will be described below with reference to FIGS. 1 to 9.

First, the overall structure of the automatic door apparatus including the door airtightness maintaining apparatus of this embodiment will be described. This automatic door device includes two rails 5 laid vertically vertically in a seamless frame 4 fixed to a fixed frame 3 above an opening 2 of a frontage through which a person or the like passes, and the two rails 5. Two suspension devices 6 which are respectively guided by the rails 5, one door 7 which is rotatably suspended by the two suspension devices 6, and an upper part which is attached to one upper surface and both side surfaces of one surface of the door 7. An airtight holding device including a packing 37, a side packing 38, and a lower packing 34 provided below the door 7, a drive device 8 for driving the door 7 to open and close along the opening 2, and an upper side of the opening 2. And a three-sided frame 10 attached to the peripheral walls 9 on both sides, a lower airtight device 11 and a lower pressing device 12 including the lower packing 34 provided below the door 7.

Two side packings 3 of the airtight holding device
The lower end of 8 has an inclined surface 38a which inclines downward toward the opening 2 side, and the lower packing 34 is projectable to the floor surface along the inclined surface 38a.

The two rails 5 provided in the upper frame 4 are
As shown in the schematic explanatory views of FIGS. 8 and 9 , the inclined portion 13 bent at one end toward the peripheral wall 9 (building) so that the door 7 moves to the three-way frame 10 side at the closed position of the door 7. Is formed. The two suspension devices 6 correspond to the two rails 5, respectively, and are provided above the door hanger 14 via a mounting shaft 15 and have an opening, as shown in FIGS. A door roller 17 that is driven on the rail 5 for preventing wheel slippage on one side by forming a flange 16 only on one outer side on the side opposite to the portion 2 side, and an opening portion of the door wheel 17 on the side where the flange 16 is not provided. An inner guide roller 18 that rotates while coming into contact with the side surface of the rail 5 from the second side to prevent the inner wheel from slipping off;
An inner guide roller 18 attached to the door hanger 14
A support plate 19 for supporting the vehicle, and a guide roller 20 provided below the door hanger 14 and located below the rail 5 to prevent wheel removal due to vertical vibration.
And a rotary suspension shaft 21 that penetrates and is attached to the horizontal portion 14A below the door hanger 14 and that allows the door hanger 14 to rotate in the horizontal direction. A locking portion 21a is formed on the upper part of the rotary suspension shaft 21, and the locking portion 21a is suspended from the horizontal portion 14a of the door hanger 14 via a bearing portion 21b. Further, a mounting portion 21c is formed below the rotary suspension shaft 21, and this mounting portion 21c is used for the door 7.
Is connected to two places on the upper surface of the. As a result, the door 7 is suspended on the rail 5 via the rotary suspension shaft 21, the horizontal portion 14a, the door hanger 14, and the door roller 17.

The drive device 8 is provided in the blind 4, and includes a drive source 22 such as a motor, a drive pulley 23 and a driven pulley 24 which are rotationally driven by the drive source 22.
And a drive belt 26 which is wound around both pulleys 23 and 24 and whose both ends are fixed to a connecting rod 25 provided above the door 7.

The lower airtightness holding device 11 constitutes a part of the airtightness holding device, and when the door 7 is in the closed position, the door 7
Is a device for completely isolating sound and airtightness by blocking the space between the lower side of the floor and the floor surface 27, and the opening end 29 of the lower mounting frame 28 provided at the lower end of the door 7 is inside (opening 2
Side) is slidably fitted in a storage frame 30 that is directed obliquely downward and has a length of the entire width of the door 7, and a sliding groove 31 formed in the longitudinal direction (opening and closing direction) of the storage frame 30. A sliding bar 33 provided with an abutment rod 32 at one end thereof so as to project from one end of the storage frame 30, and an obliquely downward direction from the opening end 29 of the storage frame 30 along the inclined surface 38a of the side packing 38. A projecting lower packing 34, one end of which is fixed to the storage frame 30 by a pin 35 in the sliding groove 31 and the other end of which is the sliding member 33.
Is fixed to the lower packing 34 by a pin 35, and the central portion of the arc shape is fixed to the lower packing 34 by a pin 35.

As a result, when the door 7 reaches the closed position, the contact rod 32 hits the side surface of the opening 2 and the sliding member 3
3 moves inward in the sliding groove 31, the deflection of the leaf spring 36 increases, and the lower packing 34 is pushed obliquely downward from the opening end 29 to block the space between the door 7 and the floor surface 27. To do. That is, as shown in FIG. 7, the angle 34a of the tip of the lower packing 34 is set to 90 °,
And by pushing the extrusion direction downward at 45 °,
In the closed position of the door 7, the side packing 38 moves to the position 38 'where it abuts the three-way frame 10, and the lower packing 34 is pushed downward in the 45 ° direction to the position 34'. Therefore, the vertical surfaces of the side packing 38 and the lower packing 34 are flush with each other and closely adhere to the three-way frame 10, and the lower surface of the lower packing 34 closely adheres to the floor surface 27. The gap can be completely sealed.

The lower pressing device 12 includes a wedge-shaped pressing inclined portion 39 attached to both ends of the lower mounting frame 28, and a pressing roller 40 installed on the floor surface 27 near both ends of the opening 2.
And the door 7 reaches the door closed position and the pressing slope 39
The door 7 is pressed toward the opening 2 when the pressing roller 40 is brought into contact with the door 7.

The operation of the automatic door device including the airtightness maintaining device for the door having the above structure will be described.

First, when the door 7 has the opening 2 in the open state, as shown in FIG. 7, each door roller 17 rests on the end portion of the linear portion of the rail 5 in a state of resting. . When the door 7 is moved to close the opening 2, when the drive pulley 23 is rotated by applying a rotation command to the drive source 22 to drive the drive source 22, the drive belt 26 moves to move the door via the connecting rod 25. Pull 7 in the closing direction. When approaching the closed position, the two door rollers 17 are mounted on the inclined portions 1 of the rails 5 on which the door rollers 17 are mounted.
3, the door wheels 17 can be easily moved from the straight portion of the rail 5 to the inclined portion 13 because the collar 16 of the door roller 17 is present only at one end of the outside.

At this time, since the direction of the door roller 17 is changed to the inclination direction of the inclined portion 13, the inclination of the door hanger 14 to which the door roller 17 is attached is also changed accordingly. Since the door 7 is rotatable via the rotary suspension shaft 6, the door 7 approaches in the inclination direction of the inclined portion 13, that is, in the direction of the opening 2 while maintaining the state parallel to the opening 2, and finally the opening 7 The three-sided frame 10 provided on the peripheral wall 9 of 2, the upper packing 37 of the door 7, and the side packing 38 are in close contact with each other. Further, since the pressing roller 40 of the lower pressing device 12 presses the pressing inclined portion 39, the three-way frame 1
0 and the side packing 38 of the door 7 also come into close contact with each other. on the other hand,
When the door roller 17 reaches the position where it moves to the inclined portion 13, the door 7
Since the abutment rod 32 of the lower airtight device 11 provided below the door 7 starts to abut the side surface of the opening 2, as described above, the lower packing 34 gradually begins to project obliquely forward from the lower side of the door 7 and finally. The lower part of the door 7 and the floor surface 27 and the side packing 38 are cut off from each other.

In this way, by simply moving the door 7 in the closing direction by driving the driving source 22, the three-way frames 10 provided on both sides and the upper side of the opening 2, the upper packing 37 and the side packing 38 of the door 7 are provided. In addition, the space between the floor 27 below the opening 2 and the door 7 and the space between the side packing 38 and the lower packing 34 are closed, so that the inside of the space partitioned by the door 7 is soundproofed. It is hermetically closed.

Next, when the door 7 is moved from the closed state of the opening 2 by the door 7 to open the opening 2, the drive source 22 is instructed to rotate in the opposite direction to the above. The drive source 22 is supplied to drive the drive pulley 22 to rotate the drive pulley 23 in the reverse direction. As the door roller 17 gradually advances along the inclined portion 13 of the rail 5 in the direction of the straight line portion, the door 7 is gradually separated from the three-way frame 10 of the opening 2. At the same time, the contact rod 32, which is in contact with the side surface of the opening 2 and is retracted into the sliding groove 31, starts gradually protruding from the sliding groove 31 by the restoring force of the leaf spring 36, and the lower packing 34 is attached to the lower portion. The frame 28 is retracted into the storage frame 30 to form a gap between the door 7 and the floor surface 27 and between the inclined surface 38a of the side packing 38. Then, as the door 7 further advances in the opening direction, the door roller 17 moves from the inclined portion 13 of the rail 5 to the linear portion, and finally the opening 2 is completely opened.

In the above embodiments, only the case where one door 7 is installed in the opening 2 has been described, but the same applies when two doors 7 are installed. Since the three-sided frame 10 is configured to be integrated with the peripheral wall 9, it is not necessary to provide it and the peripheral wall 9 may be used for this purpose.

[0020]

As is apparent from the above description, according to the door airtightness retaining device of the present invention, the upper packings of the door, 2
Since the one side packing closely adheres to the peripheral wall of the opening, and the lower packing is inclined toward the opening side at the lower ends of the two side packings, the two side packings protrude from the lower side of the door along the inclined surface. Since it is configured to be in close contact with the floor surface, it is possible to completely close the opening without a gap.

[Brief description of drawings]

FIG. 1 is an overall view of a partially omitted automatic door device.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a front view of the suspension device.

4 is a sectional view taken along line BB of FIG.

FIG. 5 is a plan view of the suspension device.

FIG. 6 is an explanatory diagram of a lower airtight device.

FIG. 7 is an explanatory diagram of a lower airtight device.

FIG. 8 is a schematic explanatory diagram of a rail and a suspension device with a door open.

FIG. 9 is a schematic explanatory diagram of a rail and a suspension device in a door closed state.

FIG. 10 is a front explanatory view of a conventional example.

FIG. 11 is an enlarged side cross-sectional partial explanatory view showing a defect of the conventional example.

FIG. 12 is an enlarged plan view showing a defect of a conventional example.

[Explanation of symbols]

 2 opening 7 door 9 peripheral wall 27 floor surface 37 upper packing 38 side packing 38a inclined surface 34 lower packing

Claims (1)

[Claims] 1. An upper packing and a side packing which are provided on the upper side and both sides of one surface of the door and which are in close contact with the peripheral walls on the upper side and both sides of the opening when the door approaches the side of the opening perpendicular to the opening / closing direction. And a lower packing that is provided over the entire width in the width direction below the door and that protrudes from the lower side of the door and comes into close contact with the floor surface when the door approaches the opening side, An airtight holding device for a door, characterized in that the lower end of the side packing is formed into an inclined surface which is inclined downward toward the opening side, and the lower packing is provided so as to project along the inclined surface.